Tone-generating probe



FIG. 1 is a perspective view of a tone-generating probe for cable mapping showing my new design;

FIG. 2 is a front plan view thereof;

FIG. 3 is a rear plan view thereof;

FIG. 4 is a left side elevation view thereof;

FIG. 5 is a right side elevation view thereof;

FIG. 6 is a top elevation view thereof; and,

FIG. 7 is a bottom elevation view thereof. 

The ornamental design for a tone-generating probe, as shown and described. 